//
//  SinaUserAccount.swift
//  SinaWeiBo
//
//  Created by 王忠楠 on 16/9/22.
//  Copyright © 2016年 wangzn. All rights reserved.
//

import UIKit

//存储或读取沙盒路径

private let path = ( NSSearchPathForDirectoriesInDomains( .documentDirectory, .userDomainMask, true).last! as NSString).appendingPathComponent("userAccount.archiver")



//用户账号模型
class SinaUserAccount: NSObject, NSCoding {
    
    //用户授权的唯一票据
    var access_token : String?
    //access_token的生命周期,单位是秒数
    
    var expires_in: TimeInterval = 0{
        
        didSet{
            
          expiresDate = Date().addingTimeInterval(expires_in)
            
        }
        
        
        
    }
    
    var expiresDate: Date?
    
    
    //授权用户的UID
    var uid: Int64 = 0
    //用户名
    var name: String?
    
    //用户头像
    var avatar_large: String?
    
    
    
    //kvc构造函数
    init(dic:[String:Any]) {
        
        super.init()
        
        setValuesForKeys(dic)
    }
    
    //防止字段不匹配导致崩溃
    
    override func setValue(_ value: Any?, forUndefinedKey key: String) {
        
        
    }
    
    //归档解当
    
    func encode(with aCoder: NSCoder) {
        aCoder.encode(access_token, forKey: "access_token")
        aCoder.encode(expiresDate, forKey: "expiresDate")
        aCoder.encode(uid, forKey: "uid")
        
        aCoder.encode(name, forKey: "name")
        aCoder.encode(avatar_large, forKey: "avatar_large")
    }
    
    required init?(coder aDecoder: NSCoder) {
        
        access_token = aDecoder.decodeObject(forKey: "access_token") as? String
        
        expiresDate = aDecoder.decodeObject(forKey: "expiresDate") as? Date
        uid = aDecoder.decodeInt64(forKey: "uid")
        
        name = aDecoder.decodeObject(forKey: "name") as? String
        
        avatar_large = aDecoder.decodeObject(forKey: "avatar_large")as? String
        
        
    }
    
    
    //保存当前用户对象
    
    func saveUserAccount() -> Void {
        NSKeyedArchiver.archiveRootObject(self, toFile: path)
    }
    
    //从指定的沙盒路径里面加载用户对象
    class func loadUserAccount() -> SinaUserAccount? {
        return NSKeyedUnarchiver.unarchiveObject(withFile: path)as? SinaUserAccount
        
    }
    
    
    
    
    

}
